Chemical Properties
rust-brown to brown fine powder
Uses
Catalyst for coupling reactions of organic halides, organometallic Compounds and also for the cyclooligomerization of cumulenes;.
Uses
Tetrakis(triphenylphosphine)nickel(0) is a catalyst for coupling reactions of organic halides, organometallic compounds and also for the cyclooligomerization of cumulenes.
Preparation
The standard preparation of Tetrakis(triphenylphosphine)nickel involves the reduction of Nickel(II) Acetylacetonate with Triethylaluminum in the presence of Triphenylphosphine. To 21.3 g of anhydrous Ni(acac)2 and 125 g PPh3 in 800 mL of Et2O under N2 at 0°C is slowly added 28.0 g Et3Al. The reddish-brown precipitate is collected, washed with Et2O, and twice dissolved in benzene and reprecipitated by the addition of n-heptane to give about 50 g (55%) of Ni(PPh3)4.
reaction suitability
core: nickel
reagent type: catalyst
storage
Tetrakis(triphenylphosphine)nickel is highly oxygen sensitive. Special inert-atmosphere techniques must be used. Should be stored at 0 °C. Cancer suspect agent.
